JP2013234986A5

JP2013234986A5 - Pressure detector

Info

Publication number: JP2013234986A5
Application number: JP2012270774A
Authority: JP
Filing date: 2012-11-22
Publication date: 2015-03-12
Anticipated expiration: 2032-11-22

Description

この発明は、真空ポンプなどの被検知体内の圧力を検出する圧力検知装置に関する。 This invention relates to pressure Chikaraken TomoSo location for detecting the pressure in the detection object such as a vacuum pump.

この発明は、以上のような観点からなされたもので、真空ポンプなどの被検知体内の圧力をアナログ的に無電源で検出し、かつ容易に検出した圧力の値を視認することができる圧力検知装置の提供を目的とする。 The present invention has been made from the above viewpoint, to visually recognize the value of the pressure that the pressure in the sensing object analog manner to detect without power, was detected in either One easily, such as a vacuum pump and an object thereof is to provide a pressure sensing equipment that can.

上記の目的を達成するために、本発明の圧力検知装置は、被検知体内の圧力を検知する圧力検知装置であって、一端側が封止され、他端側が被検知体に接続された筒状のベローズ部材と、ベローズ部材を収容する筒状のハウジングと、ベローズ部材の内部に配置された伸縮補強機構とを備え、ベローズ部材の周面は、ハウジングの軸方向に伸縮するベローズであり、ハウジングの周面には、ベローズ部材の周面が視認可能な窓部が形成され、伸縮補強機構は、ベローズ部材を伸長方向に付勢するバネを有することを特徴とする。
また、本発明の圧力検知装置においては、バネは、螺旋状のバネであり、伸縮補強機構は、バネの内側に配置された伸縮自在なパイプを有していることが好ましい。
また、本発明の圧力検知装置においては、パイプは、バネの一端と当接する第１鍔部を有する第１パイプ部材と、バネの他端と当接する第２鍔部を有し、第１パイプ部材に対して軸方向で相対的に移動可能な第２パイプ部材とで構成されていることが好ましい。
また、本発明の圧力検知装置においては、窓部は、ハウジングの軸方向に沿って幅が徐々に狭くなっていることが好ましい。
また、本発明の圧力検知装置においては、ベローズ部材の周面の窓部で観察可能な領域は、着色部と、ハウジングの軸方向で着色部に隣接するように設けられた非着色部とを有していることが好ましい。 To achieve the above Symbol purpose of the pressure sensing device of the present invention, there is provided a pressure detection device for detecting the pressure of the detected body, one end sealed, the other end is connected to the sensing object The bellows member includes a cylindrical bellows member, a cylindrical housing that accommodates the bellows member, and an expansion / contraction reinforcing mechanism disposed inside the bellows member, and a peripheral surface of the bellows member is a bellows that expands and contracts in the axial direction of the housing. In addition, a window portion in which the peripheral surface of the bellows member can be visually recognized is formed on the peripheral surface of the housing, and the expansion / contraction reinforcing mechanism has a spring that biases the bellows member in the extending direction.
Moreover, in the pressure detection apparatus of this invention, it is preferable that a spring is a helical spring and the expansion / contraction reinforcement mechanism has a telescopic pipe arrange | positioned inside the spring.
Further, in the pressure detection device of the present invention, the pipe has a first pipe member having a first flange portion that comes into contact with one end of the spring, and a second pipe portion that comes into contact with the other end of the spring, and the first pipe It is preferable that the second pipe member is movable relative to the member in the axial direction.
Moreover, in the pressure detection apparatus of this invention, it is preferable that the width | variety of the window part becomes narrow gradually along the axial direction of a housing.
In the pressure detection device of the present invention, the region that can be observed in the window portion on the peripheral surface of the bellows member includes a colored portion and a non-colored portion that is provided adjacent to the colored portion in the axial direction of the housing. It is preferable to have.

また、上記の目的を達成するために、本発明の圧力検知装置は、被検知体内の圧力を検知する圧力検知装置であって、一端側が封止され、他端側が被検知体に接続された筒状のベローズ部材と、ベローズ部材を収容する筒状のハウジングとを備え、ベローズ部材の周面は、ハウジングの軸方向に伸縮するベローズであり、ハウジングの周面には、ベローズ部材の周面が視認可能な窓部が形成され、窓部は、ハウジングの軸方向に沿って幅が徐々に狭くなっていることを特徴とする。
また、本発明の圧力検知装置においては、ベローズ部材の周面の窓部で観察可能な領域は、着色部と、ハウジングの軸方向で着色部に隣接するように設けられた非着色部とを有していることが好ましい。 In order to achieve the above object, the pressure detection device of the present invention is a pressure detection device for detecting the pressure in the body to be detected, wherein one end side is sealed and the other end side is connected to the body to be detected. A cylindrical bellows member and a cylindrical housing that accommodates the bellows member, and the peripheral surface of the bellows member is a bellows that expands and contracts in the axial direction of the housing, and the peripheral surface of the housing includes the peripheral surface of the bellows member Is formed, and the width of the window portion is gradually narrowed along the axial direction of the housing.
In the pressure detection device of the present invention, the region that can be observed in the window portion on the peripheral surface of the bellows member includes a colored portion and a non-colored portion that is provided adjacent to the colored portion in the axial direction of the housing. It is preferable to have.

この発明によれば、ベローズの伸縮量が圧力の変化と直線関係となるのを前提に、これをアナログ的に検出することができ、電源を用いずに無電源で検出することができると共に、表示手段はベローズの伸縮に伴って監視窓より目視され視認されることとなり、目盛などを用いない複雑な機構とせず、部品点数も少なく、圧力の状況が一目でわかる真空インジケーターとした圧力検知装置を提供することができる。 According to this invention, on the assumption that the expansion and contraction amount of the bellows has a linear relationship with the change in pressure, this can be detected in an analog manner, and can be detected without a power source, without using a power source, The display means will be visually recognized through the monitoring window as the bellows expands and contracts, and it does not have a complicated mechanism that does not use scales, etc., has a small number of parts, and is a pressure indicator that provides a vacuum indicator that shows the pressure status at a glance. it is possible to provide a location.

また、樹脂ベローズに伸縮補強機構を備える場合には、より一層ベローズの伸縮動作に応動し協働させることができ、ベローズの伸縮量が圧力の変化と直線関係となるリニア性を向上させることができる圧力検知装置を提供することができる。 In addition, when the resin bellows is provided with an expansion / contraction reinforcement mechanism, it can further respond to and cooperate with the expansion / contraction operation of the bellows, and the linearity in which the expansion / contraction amount of the bellows has a linear relationship with the change in pressure can be improved. it is possible to provide a pressure sensing equipment.

以下、この発明の実施例を図面に基づいて説明する。なお、第１の実施例は、本発明の参考例であり、第２の実施例が、本発明の実施例である。図１乃至図６は、この発明の第１の実施例である。検知体１０は、図１２に示したように真空ポンプなどの被検知体Ｘに接続されるもので、図１に示すようにキャップ体１１とハウジング１２とが一体となるように構成されており、ハウジング１２の内部には伸縮自在なベローズ１４を有すると共に、表示手段１６の監視窓１３を介してベローズ１４を目視可能とする。 Embodiments of the present invention will be described below with reference to the drawings. The first example is a reference example of the present invention, and the second example is an example of the present invention. 1 to 6 show a first embodiment of the present invention. The detection body 10 is connected to the detection object X such as a vacuum pump as shown in FIG. 12, and is configured such that the cap body 11 and the housing 12 are integrated as shown in FIG. The housing 12 has an expandable / contractible bellows 14 and the bellows 14 can be seen through the monitoring window 13 of the display means 16.

また、検知体１０の構造もキャップ体１１など相手方装置に合わせ金属製のネジ切りされたものとし、また、その元部もニップル型に構成することもできる。さらに、検知体１０の内部構造もベローズ＋Ｏリング＋締め込み部品としてのクランプ＋ネジ部品、ベローズ＋差し込み継手などの組み合わせなどとすることが可能で、その他逆テーパーなど種々の手段を選択することができる。 Further, it is assumed that the metallic threaded structures fit to the other party apparatus such as a cap body 1 1 of the sensing member 10, it can also be configured to nipple also its original unit. Further, the internal structure of the detection body 10 can also be a combination of a bellows + O-ring + clamping / screwing part as a tightening part, a bellows + insertion joint, etc. Various other means such as reverse taper can be selected. it can.

Ｘ被検知体
１０検知体
１１キャップ体
１１ａ基部
１１ｂネジ部
１１ｃ通路
１１ｄ段部
１１ｅ第１凹部
１１ｆ第２凹部
１１ｇ第３凹部
１１ｈ雌ねじ受承凹部
１２ハウジング
１２ａ有底部
１２ｂ開口部
１２ｃ側壁部
１３監視窓
１４ベローズ
１４ａ先筒部
１４ｂ膨出部
１４ｃ雄ねじ部
１５カバー部
１６表示手段
１６ａ非着色部
１６ｂ着色部
１７Ｏリング
１８パッキン
１９目盛
２０伸縮補強機構
２１金属製のバネ体
２２金属製または樹脂製のパイプ X Detected object 10 Detected object 11 Cap body 11a Base part 11b Screw part 11c Passage 11d Step part 11e First recessed part 11f Second recessed part 11g Third recessed part 11h Female thread receiving recessed part 12 Housing 12a Bottomed part 12b Opening part 12c Side wall part 13 Monitoring Window 14 Bellows 14a Lead tube portion 14b Expansion portion 14c Male thread portion 15 Cover portion 16 Display means 16a Non-colored portion 16b Colored portion 17 O-ring 18 Packing 19 Scale 20 Stretch reinforcement mechanism 21 Metal spring body 22 Metal or resin Made of pipe

Claims

A pressure detection device for detecting the pressure in the body to be detected,
A cylindrical bellows member having one end sealed and the other end connected to the body to be detected; a cylindrical housing that houses the bellows member; and an expansion / contraction reinforcement mechanism disposed inside the bellows member. Prepared,
The peripheral surface of the bellows member is a bellows that expands and contracts in the axial direction of the housing,
On the peripheral surface of the housing, a window portion is formed in which the peripheral surface of the bellows member is visible,
The expansion / contraction reinforcement mechanism includes a spring that urges the bellows member in an extending direction.

The pressure detection device according to claim 1,
The spring is a spiral spring;
The pressure detecting device, wherein the expansion / contraction reinforcing mechanism includes an expandable / contractible pipe disposed inside the spring.

The pressure detection device according to claim 2,
The pipe has a first pipe member having a first flange portion that comes into contact with one end of the spring, and a second pipe portion that comes into contact with the other end of the spring, and is axially disposed with respect to the first pipe member. A pressure sensing device comprising a second pipe member that is relatively movable.

It is a pressure sensing device given in any 1 paragraph of Claims 1-3,
The pressure detector according to claim 1, wherein the width of the window portion is gradually reduced along the axial direction of the housing.

The pressure detection device according to any one of claims 1 to 4,
The region of the peripheral surface of the bellows member that can be observed by the window portion includes a colored portion and a non-colored portion provided so as to be adjacent to the colored portion in the axial direction of the housing. Pressure detector.

A pressure detection device for detecting the pressure in the body to be detected,
A cylindrical bellows member sealed at one end and connected to the body to be detected at the other end, and a cylindrical housing that houses the bellows member;
The peripheral surface of the bellows member is a bellows that expands and contracts in the axial direction of the housing,
On the peripheral surface of the housing, a window portion is formed in which the peripheral surface of the bellows member is visible,
The pressure detector according to claim 1, wherein the width of the window portion is gradually reduced along the axial direction of the housing.

The pressure detection device according to claim 6,
The region of the peripheral surface of the bellows member that can be observed by the window portion includes a colored portion and a non-colored portion provided so as to be adjacent to the colored portion in the axial direction of the housing. Pressure detector.